Place the butter and raspberries in a stand mixer bowl.

TUrn the mixer run on high for 2-3 minutes to thoroughly break up the berries until you get a really creamy mixture (aside from the seeds).

Add the SPLENDA® Naturals Sugar & Stevia Blend and the vanilla (if you choose).

Mix this on high for around 5 minutes.  You want it stiff enough to stand on it’s own so it’ll pipe and hold up well!

If it’s too stuff, add a tiny bit of heavy cream to soften it to the desired texture.  I only used about half a tablespoon and you may not need it at all.  You could also subsitute milk, but be very careful to not add too much and make the frosting runny.